| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | FORM 4 | Jan 24, 2022 | Jan 21, 2022 | 001-08443 |
| 4 | Open Document | Open Filing | FORM 4 | Sep 3, 2021 | Sep 2, 2021 | 001-08443 |
| 4 | Open Document | Open Filing | FORM 4 | Jul 9, 2021 | Jul 7, 2021 | 001-08443 |
| 4 | Open Document | Open Filing | FORM 4 | Apr 5, 2021 | Apr 1, 2021 | 001-08443 |
| 4 | Open Document | Open Filing | FORM 4 | Feb 1, 2021 | Jan 28, 2021 | 001-08443 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | May 15, 2017 | May 11, 2017 | 001-08443 |
| 3 | Open Document | Open Filing | PRIMARY DOCUMENT | Mar 1, 2017 | Mar 1, 2017 | 001-08443 |